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real is a standard type of the Pascal Programming language. It is used to define a floating point number which may contain a decimal point and possibly an exponent, as opposed to a Integer data type, used to define a whole number.

The size may vary from 6 bytes, 48 bits (you may rapresent numbers from 10^-32 to 10^32) to 8 bytes 68 bits (10^-300 to 10^300).